How do I find the average interest of two mortgages?

I think what you're talking about is called a "Blended Interest Rate"... if you have 2 mortgages on one property, one mortgage has one rate and balance, the other mortgagee has a different rate and balance, and you want to know what the effective blended rate is for both rates and mortgages combined. It's not hard to figure out, but will take too long on this post so here's a link to a blended rate calculator... http://www.bargaineering.com/articles/how-to-calculate-blended-interest-rates.html I'm a Broker here in Scottsdale AZ and I only lend in Arizona. If you or someone you know is looking for financing options, feel free to contact me or pass along my information. 480-287-5714 WilliamAcres.com

Use williams link to get the blended rate